CN112833666A

CN112833666A - Hardware processing soldering tin waste material founding instrument

Info

Publication number: CN112833666A
Application number: CN202110001284.6A
Authority: CN
Inventors: 乌日汉
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-01-04
Filing date: 2021-01-04
Publication date: 2021-05-25

Abstract

The invention discloses a hardware processing soldering tin waste material melt-casting tool which comprises a melting furnace, wherein a discharge pipe is fixedly connected to the middle of the lower end of the melting furnace in an inserting manner, a filtering device is fixedly connected to the lower end of the discharge pipe in an inserting manner, a discharge pipe is fixedly connected to the lower portion of the left end of the filtering device in an inserting manner, a base is fixedly connected to the lower end of the filtering device, a refrigerating device is fixedly connected to the right portion of the upper end of the base, an air inlet pipe is fixedly connected to the upper portion of the left end of the refrigerating device, a purifying device is fixedly connected to the right end of the air inlet pipe, a feed hopper is fixedly connected to the left portion of the upper end of the melting furnace in. According to the tin soldering waste material melt casting tool for hardware processing, the whole tin soldering waste material melt casting tool can refrigerate and purify waste gas generated in the melting process, can filter the melted tin soldering, improves the quality of the tin soldering, and is suitable for wide application.

Description

Hardware processing soldering tin waste material founding instrument

Technical Field

The invention relates to the technical field of hardware processing, in particular to a hardware processing soldering tin waste melt casting tool.

Background

The hardware processing is to process raw materials into various parts according to the drawing or sample of a customer by using machines such as a lathe, a milling machine, a drilling machine, polishing and the like, while the soldering tin is an important industrial raw material for connecting electronic components in a welding line, is a soldering flux with a lower melting point, mainly refers to a soldering flux made of tin-based alloy, the manufacturing method of the soldering tin is to firstly use a melting method for ingot making, then press processing into a material, and during the operations of soldering tin processing, welding and the like in the hardware processing operation, soldering tin waste materials are often generated, so that the melting and casting work of the soldering tin waste materials needs to be carried out by using a melting and casting furnace, and the inventor finds that at least the following problems in the prior art are not solved: 1. because a lot of impurities exist in the soldering tin waste, the existing soldering tin waste melt-casting tool cannot filter the melted soldering tin waste, and the quality of the soldering tin for reuse is influenced; 2. the traditional casting tool can not effectively filter and purify waste gas generated in the casting process, and the directly discharged waste gas can cause great pollution to the environment; therefore, a hardware processing soldering tin scrap melting and casting tool is provided.

Disclosure of Invention

The invention mainly aims to provide a hardware processing soldering tin waste melt casting tool which can effectively solve the problems in the background technology.

In order to achieve the purpose, the invention adopts the technical scheme that:

a hardware processing soldering tin waste material melt-casting tool comprises a melting furnace, wherein a discharge pipe is fixedly connected to the middle of the lower end of the melting furnace in an inserting manner, a filter device is fixedly connected to the lower end of the discharge pipe in an inserting manner, a discharge pipe is fixedly connected to the lower portion of the left end of the filter device in an inserting manner, a base is fixedly connected to the lower end of the filter device in an inserting manner, a refrigerating device is fixedly connected to the right portion of the upper end of the base, an air inlet pipe is fixedly connected to the upper portion of the left end of the refrigerating device, a purifying device is fixedly connected to the right end of the air inlet pipe in an inserting manner, an exhaust pipe is fixedly connected to the middle of the right end of the purifying device in an inserting manner, a feed hopper is fixedly connected to the left portion, and the lower ends of the four mounting plates are fixedly connected with the upper end of the base through bolts.

As a further improvement of the above scheme, filter equipment includes the rose box, common fixedly connected with screen cloth between the left tank wall upper portion of rose box and the right tank wall upper portion, the upper end middle part fixedly connected with material pump of rose box, the lower extreme middle part of material pump alternates fixedly connected with inlet pipe, the upper end middle part of material pump alternates fixedly connected with material pumping pipe, and material pumping pipe keeps away from the one end of material pump and arranges the lower extreme fixed connection of material pipe, the lower extreme of rose box and the upper end fixed connection of base.

As a further improvement of the above scheme, refrigerating plant includes the refrigeration case, common fixedly connected with a plurality of refrigeration pipe between the last case wall right part of refrigeration case and the lower case wall right part, the left end lower part of refrigeration case alternates fixedly connected with air exhaust device, air exhaust device's right-hand member fixedly connected with cooling tube, and the other end of cooling tube run through the last case wall of refrigeration case and with the lower extreme fixed connection of intake pipe, the upper end rear portion of refrigeration case alternates fixedly connected with inlet tube, the lower extreme of refrigeration case and the upper end fixed connection of base.

As a further improvement of the above scheme, the air exhaust device includes an air exhaust pump, a fixedly connected air exhaust pipe is inserted in the middle of the lower end of the air exhaust pump, the lower end of the air exhaust pipe penetrates through the upper furnace wall of the melting furnace and is fixedly connected with an air exhaust cover, a fixedly connected air delivery pipe is inserted in the middle of the upper end of the air exhaust pump, one end of the air delivery pipe, which is far away from the air exhaust pump, penetrates through the left box wall of the refrigeration box and is fixedly connected with the left end of the cooling pipe, and the lower end of the air exhaust pump is fixedly connected.

As a further improvement of above-mentioned scheme, purifier includes the purifying box, the upper end rear portion of purifying box alternates swing joint and has cleaning device, common fixedly connected with fixed plate between the left tank wall lower part of purifying box and the right tank wall lower part, common fixedly connected with filter screen and No. two filter screens between the upper end left part of fixed plate and the last tank wall left part of purifying box, and a filter screen is located the left side of No. two filter screens, the front end lower part of purifying box alternates swing joint and has the drawer, the upper end right part fixedly connected with clarifier of fixed plate, and the right-hand member of clarifier and the left end fixed connection of blast pipe, the lower extreme of purifying box and the upper end fixed connection of refrigeration case.

As a further improvement of the above scheme, the cleaning device includes a cleaning motor, an output end of the cleaning motor penetrates through an upper tank wall of the purification tank and is fixedly connected with a threaded rod, an upper end and a lower end of the threaded rod are respectively movably connected with the upper tank wall of the purification tank and an upper end of a fixed plate through bearings, a movable plate is movably connected to the middle of the outer surface of the threaded rod in an inserting manner, a blowing device is fixedly connected to the middle of the lower end of the movable plate in an inserting manner, cleaning brushes are fixedly connected to groups of the movable plates in the middle and rear ends respectively, a limiting rod is movably connected to the front portion of the upper end of the movable plate in an inserting manner, and the upper end and the lower end of the limiting rod are respectively.

As a further improvement of the above scheme, the blowing device includes an exhaust fan, the upper end middle part of the exhaust fan alternates the fixedly connected with connecting pipe, the upper end of connecting pipe runs through the lower extreme and the fixed pipe of fixedly connected with of movable plate, the left end upper portion and the right-hand member upper portion of fixed pipe all alternate fixedly connected with a plurality of pressurization shower nozzle, the upper end of exhaust fan and the lower extreme fixed connection of movable plate.

As a further improvement of the scheme, a valve is arranged on the discharging pipe, and a plurality of anti-slip blocks are fixedly connected to the outer surface of the sealing cover.

As a further improvement of the scheme, the cooling pipe is arranged in a spiral structure, and the cooling pipe is not in contact with the plurality of refrigerating pipes.

As the further improvement of above-mentioned scheme, the mesh diameter length of a filter screen will be greater than the mesh diameter length of No. two filter screens, open the upper end left part of fixed plate has a plurality of row's cinder hole, and the diameter length of row's cinder hole will be greater than the mesh diameter length of a filter screen, the left end middle part of clarifier is provided with the exhaust fan.

As the further improvement of above-mentioned scheme, the movable plate is located between filter screen and No. two filter screens, and the one end that the movable plate was kept away from to two cleaning brushes is equallyd divide and is do not contact with the right-hand member of a filter screen and the left end of No. two filter screens.

As a further improvement of the scheme, the plurality of pressurizing nozzles are obliquely arranged and are not in contact with the moving plate and the two cleaning brushes.

Compared with the prior art, the invention has the following beneficial effects:

1. according to the invention, the filtering device is arranged, the suction force is generated by the material pumping pump, the soldering tin waste melted by the melting furnace can be sucked into the filtering box, the melted soldering tin waste can be filtered and screened by the screen in the filtering box, and impurities contained in the soldering tin waste can be effectively screened out, so that the quality of soldering tin is improved, and the soldering tin can be reused.

2. According to the invention, the refrigerating device and the air extracting device are arranged, the suction force is generated by the air extracting pump, the waste gas generated in the soldering tin waste material casting process can be sucked into the cooling pipe, and the residence time of the waste gas in the refrigerating box is prolonged by the spiral arrangement of the cooling pipe, so that the waste gas can be effectively refrigerated, the problem that the equipment is damaged due to overhigh temperature of the waste gas is avoided, and the service life of the equipment is effectively prolonged.

3. According to the invention, by arranging the purification device and the cleaning device, cooled waste gas can be sucked into the purification box through the exhaust fan on the purifier, the waste gas can be subjected to double filtration and purification through the first filter screen and the second filter screen, and then the waste gas is purified again through the purifier, so that the waste gas can be effectively filtered and purified, the problem of environmental pollution caused by directly discharged waste gas is avoided, the first filter screen and the second filter screen are convenient to clean, and the purification efficiency of the waste gas is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic view of the overall structure of a hardware processing solder waste melt-casting tool according to the present invention;

FIG. 2 is a schematic structural diagram of a filtering device of a hardware processing soldering tin waste melt casting tool according to the present invention;

FIG. 3 is a schematic structural diagram of a refrigerating device of a hardware processing soldering tin scrap melt-casting tool according to the present invention;

FIG. 4 is a schematic structural diagram of an air extractor of a hardware processing solder waste casting tool according to the present invention;

FIG. 5 is a schematic structural diagram of a purification device of a hardware processing solder waste melt casting tool according to the present invention;

FIG. 6 is a schematic structural diagram of a cleaning device for a hardware processing soldering tin waste melt-casting tool according to the present invention;

FIG. 7 is a schematic structural diagram of an air blowing device of a hardware processing solder waste melt-casting tool according to the present invention.

In the figure: 1. a furnace; 2. a filtration device; 3. a refrigeration device; 4. a purification device; 5. an exhaust pipe; 6. an air inlet pipe; 7. a sealing cover; 8. a feed hopper; 9. a discharge pipe; 10. supporting legs; 11. a discharge pipe; 12. mounting a plate; 13. a base; 21. a filter box; 22. screening a screen; 23. a feed pipe; 24. a material pumping pump; 25. a material pumping pipe; 31. a refrigeration case; 32. a refrigeration pipe; 33. a cooling tube; 34. an air extraction device; 35. a water inlet pipe; 341. an air pump; 342. a gas delivery pipe; 343. an air exhaust pipe; 344. an air extraction hood; 41. a purification box; 42. a cleaning device; 43. a first filter screen; 44. a fixing plate; 45. a second filter screen; 46. a drawer; 47. a purifier; 421. cleaning the motor; 422. a threaded rod; 423. moving the plate; 424. a blowing device; 425. a cleaning brush; 426. a limiting rod; 51. an exhaust fan; 52. a connecting pipe; 53. a fixed tube; 54. and (4) pressurizing the spray head.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, such as "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The technical scheme of the invention is further explained by combining the attached drawings.

As shown in figures 1-7, a hardware processing soldering tin waste material melt-casting tool comprises a melting furnace 1, a discharge pipe 11 is fixedly inserted in the middle of the lower end of the melting furnace 1, a filter device 2 is fixedly connected to the lower end of the discharge pipe 11, a discharge pipe 9 is fixedly inserted in the lower part of the left end of the filter device 2, a base 13 is fixedly connected to the lower end of the filter device 2, a refrigeration device 3 is fixedly connected to the right upper part of the upper end of the base 13, an air inlet pipe 6 is fixedly connected to the upper part of the left end of the refrigeration device 3, a purification device 4 is fixedly connected to the right end of the air inlet pipe 6, an exhaust pipe 5 is fixedly inserted in the middle of the right end of the purification device 4, a feed hopper 8 is fixedly inserted in the left upper part of the upper end of the melting furnace 1, a sealing cover 7 is in threaded, and the lower ends of the four mounting plates 12 are fixedly connected with the upper end of the base 13 through bolts.

Filter equipment 2 includes rose box 21, common fixedly connected with screen cloth 22 between the left tank wall upper portion of rose box 21 and the right tank wall upper portion, the upper end middle part fixedly connected with material pump 24 of rose box 21, the lower extreme middle part of material pump 24 alternates fixedly connected with inlet pipe 23, the upper end middle part of material pump 24 alternates fixedly connected with material pumping pipe 25, and material pumping pipe 25 keeps away from the one end of material pump 24 and arranges the lower extreme fixed connection of material pipe 11, the lower extreme of rose box 21 and the upper end fixed connection of base 13, it is provided with the valve on the material pipe 11 to arrange, the fixed surface of sealed lid 7 is connected with a plurality of non slipping spur.

Refrigerating plant 3 includes refrigeration case 31, common fixedly connected with a plurality of refrigeration pipe 32 between the last case wall right part of refrigeration case 31 and the lower case wall right part, the left end lower part of refrigeration case 31 alternates fixedly connected with air exhaust device 34, air exhaust device 34's right-hand member fixedly connected with cooling tube 33, and the other end of cooling tube 33 run through the last case wall of refrigeration case 31 and with intake pipe 6's lower extreme fixed connection, the upper end rear portion of refrigeration case 31 alternates fixedly connected with inlet tube 35, the lower extreme of refrigeration case 31 and the upper end fixed connection of base 13, cooling tube 33 sets up for the structure of spiraling, waste gas residence time in refrigeration case 31 has been increased, the refrigeration effect to waste gas has been strengthened, and cooling tube 33 and a plurality of refrigeration pipe 32 contactless.

The air extracting device 34 comprises an air extracting pump 341, an air extracting pipe 343 fixedly connected with the lower end of the air extracting pump 341 is inserted in the middle of the lower end of the air extracting pipe 343, an upper furnace wall of the smelting furnace 1 is penetrated by the lower end of the air extracting pipe 343, an air extracting cover 344 fixedly connected with the upper end of the air extracting pump 341 is inserted in the middle of the upper end of the air extracting pump 341, an end, far away from the air extracting pump 341, of the air conveying pipe 342 penetrates through a left box wall of the refrigerating box 31 and is fixedly connected with the left end of the cooling pipe 33, and.

The purification device 4 comprises a purification box 41, a cleaning device 42 is inserted and movably connected at the rear part of the upper end of the purification box 41, a fixing plate 44 is fixedly connected between the lower part of the left box wall and the lower part of the right box wall of the purification box 41, a first filter screen 43 and a second filter screen 45 are fixedly connected between the left part of the upper end of the fixing plate 44 and the left part of the upper box wall of the purification box 41, the first filter screen 43 is positioned at the left side of the second filter screen 45, a drawer 46 is inserted and movably connected at the lower part of the front end of the purification box 41, a purifier 47 is fixedly connected at the right part of the upper end of the fixing plate 44, the right end of the purifier 47 is fixedly connected with the left end of the exhaust pipe 5, the lower end of the purification box 41 is fixedly connected with the upper end of the refrigeration box 31, the diameter length of the mesh of the first filter screen 43 is larger than that of the second filter screen 45, so, the left part of the upper end of the fixing plate 44 is provided with a plurality of slag discharging holes, the diameter length of each slag discharging hole is larger than the diameter length of the mesh of the first filter screen 43, the cleaned waste slag can be discharged into the drawer 46 through the slag discharging holes to be collected, the middle part of the left end of the purifier 47 is provided with an exhaust fan, the exhaust fan generates suction to suck the waste gas into the purifying box 41 for purification treatment, and the purified gas is discharged out of the purifying box 41.

The cleaning device 42 comprises a cleaning motor 421, the output end of the cleaning motor 421 penetrates through the upper box wall of the purifying box 41 and is fixedly connected with a threaded rod 422, the upper end and the lower end of the threaded rod 422 are respectively and movably connected with the upper box wall of the purifying box 41 and the upper end of the fixed plate 44 through bearings, the middle part of the outer surface of the threaded rod 422 is movably connected with a movable plate 423 in an inserting manner, the middle part of the lower end of the movable plate 423 is fixedly connected with an air blowing device 424 in an inserting manner, the middle parts and the rear ends of the groups of the movable plates 423 are respectively and fixedly connected with a cleaning brush 425, the front part of the upper end of the movable plate 423 is movably connected with a limiting rod 426 in an inserting manner, the limiting rod 426 can guide and limit the movable plate 423, the stability of the movable plate 423 in the moving process is improved, the upper end and the lower end of the limiting rod, two cleaning brush 425 keep away from the one end of movable plate 423 and equally divide the right-hand member with a filter screen 43 and the left end contact of No. two filter screens 45 respectively, be convenient for cleaning brush 425 to clear up filter screen 43 and No. two filter screens 45, improved the clearance effect to filter screen 43 and No. two filter screens 45.

Blowing device 424 includes air exhauster 51, air exhauster 51's upper end middle part interlude fixedly connected with connecting pipe 52, the lower extreme and the fixed connection of movable plate 423 are run through to the upper end of connecting pipe 52, the left end upper portion and the right-hand member upper portion of fixed pipe 53 all interlude fixedly connected with a plurality of pressurization shower nozzle 54, air exhauster 51's upper end and movable plate 423's lower extreme fixed connection, a plurality of pressurization shower nozzle 54 is the slope setting, and a plurality of pressurization shower nozzle 54 all with movable plate 423 and two cleaning brush 425 contactless, be convenient for pressurization shower nozzle 54 jets gas clearance to filter screen 43 and No. two filter screens 45, the cleaning performance to filter screen 43 and No. two filter screens 45 has further been strengthened, the purification efficiency to waste gas has been improved.

In the using process of the invention, the sealing cover 7 is firstly rotated and opened, then the soldering tin waste generated by hardware processing is led into the smelting furnace 1 through the feed hopper 8, the soldering tin waste is heated and melted in the smelting furnace 1, then the valve on the discharge pipe 11 is opened and the pumping pump 24 is started, the melted soldering tin waste is sucked into the pumping pipe 25 from the discharge pipe 11 through the suction force generated by the pumping pump 24, the soldering tin waste is input into the filter box 21 through the feed pipe 23, then the melted soldering tin waste can be filtered and screened through the screen 22, the impurities contained in the soldering tin waste can be effectively screened out, thereby the quality of the soldering tin is improved, finally the soldering tin can be discharged out of the filter box 21 through the discharge pipe 9, the soldering tin can be reused, meanwhile, the suction force is generated through the suction pump 341, the waste gas generated in the soldering tin waste can be sucked into the suction pipe 343 through the suction hood 344, then the waste gas is input into the cooling pipe 33 through the air pipe 342, the temperature of the water in the refrigeration box 31 is reduced through the plurality of refrigeration pipes 32, thereby the waste gas can be effectively refrigerated, the residence time of the waste gas in the refrigeration box 31 can be increased through the spiral arrangement of the refrigeration pipes 33, thereby the waste gas can be effectively refrigerated, the problem that the equipment is damaged due to overhigh temperature of the waste gas is avoided, the service life of the equipment is effectively prolonged, meanwhile, the exhaust fan on the purifier 47 sucks the cooled waste gas into the purification box 41 through the air pipe 6, then the waste gas can be subjected to double filtration and purification through the first filter screen 43 and the second filter screen 45, and then the waste gas is subjected to secondary purification through the purifier 47, thereby the waste gas can be effectively filtered and purified, finally, the purified waste gas can be discharged through the exhaust pipe 5, and the problem that the environment is polluted by the directly discharged waste gas is avoided, when the first filter screen 43 and the second filter screen 45 need to be cleaned, the cleaning motor 421 and the exhaust fan 51 are started, the cleaning motor 421 drives the threaded rod 422 to rotate forwards and backwards, the movable plate 423 is enabled to move up and down under the guiding limit of the limiting rod 426, the two cleaning brushes 425 are enabled to move up and down together and clean the first filter screen 43 and the second filter screen 45, meanwhile, the exhaust fan 51 inputs air into the fixed pipe 53 through the connecting pipe 52, finally, the air is pressurized through the pressurizing nozzle 54 and then sprayed to the first filter screen 43 and the second filter screen 45, and cleaned residues are discharged into the drawer 46 through the residue discharge hole in the fixed plate 44 for collection and treatment, so that the cleaning effect on the first filter screen 43 and the second filter screen 45 is effectively enhanced, and meanwhile, the purification efficiency of waste gas is also improved.

The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a hardware processing soldering tin waste material founds instrument, includes smelting pot (1), its characterized in that: the device comprises a smelting furnace (1), wherein a material discharging pipe (11) is fixedly connected to the middle of the lower end of the smelting furnace (1) in an inserting mode, a filtering device (2) is fixedly connected to the lower end of the material discharging pipe (11) in an inserting mode, a material discharging pipe (9) is fixedly connected to the lower portion of the left end of the filtering device (2) in an inserting mode, a base (13) is fixedly connected to the lower end of the filtering device (2), a refrigerating device (3) is fixedly connected to the right end of the base (13), an air inlet pipe (6) is fixedly connected to the upper portion of the left end of the refrigerating device (3), a purifying device (4) is fixedly connected to the right end of the air inlet pipe (6), an exhaust pipe (5) is fixedly connected to the middle of the right end of the purifying device (4) in an inserting mode, a feeding hopper (8) is fixedly connected to the left portion of, the lower ends of the four supporting legs (10) are fixedly connected with mounting plates (12), and the lower ends of the four mounting plates (12) are fixedly connected with the upper end of a base (13) through bolts.

2. The hardware processing solder scrap melt casting tool according to claim 1, characterized in that: filter equipment (2) includes rose box (21), common fixedly connected with screen cloth (22) between the left tank wall upper portion of rose box (21) and the right tank wall upper portion, upper end middle part fixedly connected with material pump (24) of rose box (21), the lower extreme middle part of material pump (24) alternates fixedly connected with inlet pipe (23), the upper end middle part of material pump (24) alternates fixedly connected with material pumping pipe (25), and material pumping pipe (25) keep away from the one end of material pump (24) and arrange the lower extreme fixed connection of material pipe (11), the lower extreme of rose box (21) and the upper end fixed connection of base (13).

3. The hardware processing solder scrap melt casting tool according to claim 1, characterized in that: refrigerating plant (3) are including refrigeration case (31), common fixedly connected with a plurality of refrigeration pipe (32) between the last case wall right part of refrigeration case (31) and the lower case wall right part, fixedly connected with air exhaust device (34) interlude is taken place to the left end lower part of refrigeration case (31), the right-hand member fixedly connected with cooling tube (33) of air exhaust device (34), and the other end of cooling tube (33) run through the last case wall of refrigeration case (31) and with the lower extreme fixed connection of intake pipe (6), fixedly connected with inlet tube (35) interlude is taken place to the upper end rear portion of refrigeration case (31), the lower extreme of refrigeration case (31) and the upper end fixed connection of base (13).

4. The hardware processing solder scrap melt casting tool according to claim 3, characterized in that: the air extracting device (34) comprises an air extracting pump (341), an air extracting pipe (343) is fixedly connected to the middle of the lower end of the air extracting pump (341) in an inserting mode, the lower end of the air extracting pipe (343) penetrates through the upper furnace wall of the smelting furnace (1) and is fixedly connected with an air extracting cover (344), an air conveying pipe (342) is fixedly connected to the middle of the upper end of the air extracting pump (341) in an inserting mode, one end, far away from the air extracting pump (341), of the air conveying pipe (342) penetrates through the left box wall of the refrigerating box (31) and is fixedly connected with the left end of the cooling pipe (33), and the lower end of the air extracting pump (341) is fixedly connected.

5. The hardware processing solder scrap melt casting tool according to claim 1, characterized in that: the purification device (4) comprises a purification box (41), the rear part of the upper end of the purification box (41) is movably connected with a cleaning device (42) in an inserting way, a fixing plate (44) is fixedly connected between the lower part of the left box wall and the lower part of the right box wall of the purifying box (41), a first filter screen (43) and a second filter screen (45) are fixedly connected between the left part of the upper end of the fixing plate (44) and the left part of the upper box wall of the purifying box (41), the first filter screen (43) is positioned at the left side of the second filter screen (45), the lower part of the front end of the purifying box (41) is movably connected with a drawer (46) in a penetrating way, the right part of the upper end of the fixed plate (44) is fixedly connected with a purifier (47), and the right end of the purifier (47) is fixedly connected with the left end of the exhaust pipe (5), the lower end of the purifying box (41) is fixedly connected with the upper end of the refrigerating box (31).